【发布时间】:2013-02-07 19:51:35
【问题描述】:
此基本代码成功地使命令 scopeA:test 在 shell 中可访问:
package com.A;
import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;
import org.apache.felix.ipojo.annotations.Requires;
import org.apache.felix.ipojo.annotations.ServiceProperty;
import org.apache.felix.service.command.Descriptor;
@Component(immediate = true)
@Instantiate
@Provides(specifications = Commands.class)
public final class Commands {
@ServiceProperty(name = "osgi.command.scope", value = "scopeA")
String scope;
@ServiceProperty(name = "osgi.command.function", value = "{}")
String[] function = new String[] {
"test"
};
@Descriptor("Example")
public void test() {
System.out.println("hello");
}
}
但是,如果我添加一个依赖于另一个 OSGI 组件的构造函数,则该命令将不再可访问,并且“帮助”不会列出它。然而,bundle 仍然可以加载到活动状态。
package com.A;
import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;
import org.apache.felix.ipojo.annotations.Requires;
import org.apache.felix.ipojo.annotations.ServiceProperty;
import org.apache.felix.service.command.Descriptor;
import com.B;
@Component(immediate = true)
@Instantiate
@Provides(specifications = Commands.class)
public final class Commands {
public Commands(@Requires B b) {
}
@ServiceProperty(name = "osgi.command.scope", value = "scopeA")
String scope;
@ServiceProperty(name = "osgi.command.function", value = "{}")
String[] function = new String[] {
"test"
};
@Descriptor("Example")
public void test() {
System.out.println("hello");
}
}
B的内容很简单:
import org.apache.felix.ipojo.annotations.Component;
import org.apache.felix.ipojo.annotations.Instantiate;
import org.apache.felix.ipojo.annotations.Provides;
@Component(immediate = true)
@Instantiate
@Provides
final class B {
}
知道为什么不再列出该命令吗?查找有关状态的更多信息以便更好地调试的提示?
【问题讨论】:
-
B服务真的发布了吗?您可以使用命令
inspect cap service [id]进行检查,其中 [id] 应该是包含组件 B 的包的 ID。
标签: osgi apache-felix ipojo